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Temperature-dependent structural and optical properties of CuS nanoparticles synthesized via co-precipitation
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DOI:10.1016/j.matlet.2026.141252.png)
Abstract
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• CuS nanoparticles were synthesized by a simple low-temperature co-precipitation method. • XRD analysis confirmed phase-pure hexagonal covellite CuS with improved crystallinity at higher temperatures. • Crystallite size increased from 23.62 to 32.06 nm with reduced lattice strain and dislocation density. • Optical band gap decreased from 1.92 to 1.73 eV with increasing synthesis temperature. • Synthesis temperature effectively tuned the structural and optical properties of CuS nanoparticles.
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